Sam doesn’t know whether he wants his mom to be alive with Lucifer or dead and at peace, because he knows what it’s like to be trapped with the man, knows that it’s like to plead for death and not receive it. Knows that voice and those hands and the kind of torment Lucifer can inflict—knows only too well the soul of the creature who created the first demons and imbued them with such cruelty.
Half of him wants Mary to be gone, wants her to never have to know what Lucifer can do to a human body (and a human soul), but she’s his mom, and the rest of him desperately wants to see her again.